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Finding the Fourth Proportional to 265,734,430.80, 398,601,646.20 and 162,422,300.40

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Solution

The fourth proportional to 265,734,430.80, 398,601,646.20 and 162,422,300.40 is: 243,633,450.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,734,430.80 : 398,601,646.20 = 162,422,300.40 : x
  2. Step 2: Convert to fraction form
    265,734,430.80/398,601,646.20 = 162,422,300.40/x
  3. Step 3: Cross multiply
    265,734,430.80x = 398,601,646.20 × 162,422,300.40
  4. Step 4: Simplify right side
    265,734,430.80x = 64,741,796,319,030,920
  5. Step 5: Solve for x
    x = 64,741,796,319,030,920/265,734,430.80
  6. Step 6: Final answer
    x = 243,633,450.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.